Pumping apparatus for oil-wells



(No Model.) I y JONES 8v E. W. HAMMOND. `P'UMIING APPARATUS FOR DIL WELLS. No. 542,646. Y Patented July 16, 18915.

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UNITED f STATES PATENT OFFICE- SAMUEL M. JONES, OF TOLEDO, AND ERNEST W. HAMMOND, OF LIMA,

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PUNIPING APPARATUS FOR OIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 542,646, dated July 16, 1895.

Application led November 1, 1893. Serial No. 489.689. (No inodel.)

T @Ztl whom, it may concern.:

Be 1t known that we, SAMUEL M. JONES, of

Toledo, and ERNEST W. HAMMOND, ot` Lima,

Ohio, have invented certain new and useful Improvements in Pumping Apparatus for Oil Wells, of which the following is a specification.

Our invention relates to means for giving motion to the working-piston of an oil-well pump, and relates more particularly to the pumping-lever, its construction, form, and arrangement of parts, and the manner of supporting and operating the same.

The object of our invention is to dispense with the heavy unwieldy walking-beam and Samson-post and their heavy expensive foundations heretofore in use, and to substitute therefor a light strong lever and frame, or pumping-jack, which shall be durable, easily operated, comparatively inexpensive, and adapted to be supported in part by the tubing of the well itself. We attain `these objects by means of the devices hereinafter described, and shown and illustrated'in the accompanying drawings, made part hereof, in whichi Figure l is a perspective view of our apparatus, and Fig. 2 a perspective view of an alternative part of the pumping-lever hereinafter referred to.

Like letters of reference indicate like parts throughout both the views.

In the drawings, Fig. l, a supportingframe or tripod is shown, of which ct is the front leg or brace, and b b are the rear legs or braces. The rear legs or braces rest upon and are secured to a timber or other suitable foundation, and the front leg or brace a rests upon and is secured to the upwardly-projecting pipes or tubing of the Well, (preferably the tubing,) which forms a support sufficiently solid and rigid to withstand any strain or thrust of the leg or brace a. We prefer to attach the foot or brace u. to the tubing of the well by means of a clamp c, which embraces the upwardly-projecting tube d and clasps between its jaws or extremities the foot of the brace a, the clamp and brace being secured together by means of a screw-bolt d passing through the ends of the clamp and the foot of the brace a. We do not, however, confine ourselves to this manner of connecting the frame to the piping ortubing, as other ways of accomplishing the same result will obvi ously suggest: themselves to those skilled in the art.`

At the meeting-point of the three members of the tripod above mentioned is pivoted and suspended a lever, resembling in form an enlarged bell-crank, consisting of a vertical bar e, carrying at its upper end and atnearly a right angle to the bar an arm f, and below this arm and in the same vertical plane abrace e', extending upwardly from near the lower end of bar c. Arm f and brace e at their outer ends are provided with and connected by a bar g, curved outwardly in the plane of Varm f and brace c to form a segment or are oscillate in a vertical plane directly over the Well. In other words, the segment g may be regarded as the operative part ot a wheel and the extended vertical axis ot' the Well as a tangent of the periphery of vthat Wheel.

In the drawings are shown two equivalent methods of connecting the segmental piece g with the pump-rod or polish-rod m. In Fig. ll a link t' is pivotally attached at its upper end to segmental bar g and at its lower end is pivotally attached to an adjuster or head 7e, in which lthe pump-rod may be vertically adjusted and clamped. In Fig. 2 a ilexible wire rope is substituted for the link c', the

rope being looped over a hook g' on the peariphery of the segmental piece g and attached to adjuster 7c. In practice we prefer the method shown in Fig. 2. In both cases the segmental piece g is provided with a groove Z, which receives the pump-rod m as it reciprocates vertically. To the lower end of bar e is attached a pull-rod or preferably a wire rope n, which leads horizontally in the direcl` tion of the thrust of the brace a. Bar e is also provided near its lower end with a link or rope o, to which is attached a connterbalance 1o.

The operation of our device is as follows: Power being applied to rod or rope n a pull swings bar e toward the well, causing the arm f, brace e', andsegment g to swing upwardly and through their connections to pull vertically on the pump-rod, the groove ot' the segmental guide-bar g holding the pump-rod throughout its stroke constantly in the same vertical line. During the lift on the pump and during the greatest strain the thrust is through brace a against the projecting iron pipes yof the well, which are found to be ad.

. said piping or tubing, suitable supports for the remaining parts of said tripod 4or frame independentot' said piping'or tubing, and a pumping lever fulcrumed in said tripod or frame, substantially as and for the purposes specified.

2. The combination with the piping or tubing of an oil or 'similar Well, of a pumping frame provided With an extended supporting base and an intermediate pivotal support for the pu mping lever, said frame being connected to the piping or tubing of the Well at a point to one side of the pivotal support for the lever and being independently supported on the opposite side of the pivot at a point or points remote from the piping or tubing, substantially as and for the purpose speciiied.

3; The combination of a pipe or other tubing of an oil or other Well with a tripod for supporting the pump lever, means fordetaohably connecting one leg of the tripod to such tube or pipe, and suitable supports for the re* maining legs of said tripod, substantially as and for the purpose specified.

` SAMUEL M. JONES.

ERNEST XV. HAMMOND. Witnesses:

J. D. DoUGLAss, H. T. HULL. 

